CN104388058A - Low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant - Google Patents
Low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant Download PDFInfo
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- CN104388058A CN104388058A CN201410593257.2A CN201410593257A CN104388058A CN 104388058 A CN104388058 A CN 104388058A CN 201410593257 A CN201410593257 A CN 201410593257A CN 104388058 A CN104388058 A CN 104388058A
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Abstract
The invention discloses a low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant. The low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant is a composition consisting of the following components in percentage by weight: 80%-99% of glycol alkyl ether compounds, 0.1%-9% of an corrosion inhibitor, 0-1% of a scale inhibitor and 0.9%-10% of functionality regulating liquid; the pH value of the composition is 8-10. The low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant is non-toxic, harmless and non-volatile, is not nonflammable and explosive and does not corrode metal equipment, so that the consumption is reduced, and the service life of the equipment can be prolonged; meanwhile, the low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant has very good fluidity at low temperature, is a safe heat transfer medium with an excellent heat transfer property, does not precipitate and scale and has the properties of cold carrying, heat transfer, corrosion inhibition and bacteria inhibition; the low-viscosity ultralow-temperature bidirectional wide-temperature secondary refrigerant suitable for being used as a cold-carrying and heat-transfer medium at (-75) to (240) DEG C in the industrial field and is very applicable to indirect heat transfer systems used in chemical industry production and medical synthesis processes.
Description
Technical field
The present invention relates to industrial production heat-transfer medium, the energy-conservation secondary refrigerant of the two-way wide temperature of very low temperature particularly in the indirect heat transfer system of Chemical Manufacture and medical building-up process.
Background technology
All closely related with temperature at many field of industrial productions such as chemical industry, pharmacy, there is high temperature, have low temperature, have thermo-negative reaction, have thermopositive reaction.Under remaining to make system temperature the state that processing condition require, importing into indeed through the heat-transfer medium flowed in the serpentine tube of inside reactor or the interlayer of reactor outside or spreading out of that heat come.Conventional heat-transfer medium has inorganic salts solution and alcohol solution.These aqueous solution heat transfer poor-performings, and serious to metallic material corrosion, and these defects affect heat-transfer effect on the one hand, substantially reduce the work-ing life of refrigeration equipment on the other hand, govern the development of refrigeration industry for a long time always.
For the problems referred to above, existing a lot of report, mention a kind of corrosion liquid coolant in US Patent No. 5718836, this refrigerant is only for automobile antifreeze solution aspect, and adding calcium-magnesium ratio compound specially in its product, this compounds very easily causes cooling recirculation system fouling.LG-DOW refrigerating liquid (trade(brand)name DOWTHERM
tMsR-1 and DOWFROST
tM) be base-material by ethylene glycol and propylene glycol, add the refrigerating medium of a certain amount of inhibitor, this secondary refrigerant has good rustless property, but below-30 DEG C, its solution viscosity will extremely acutely raise, and mobility declines, and limits its range of application.Documents special permission publication number: 10-228382 title " high temperature water tolerance salt constituent " discloses a kind of brine composition and selects glycols or glycerol to be main body, content is 30 ~ 90%, be preferably 50 ~ 80%, but there will be following situation in actual applications: if many alcohol content too low (less than 30%), then the freezing point of the aqueous solution will be very high, and the low-temperature condition not reaching system requirements will freeze; As many alcohol content > 80%, its solution (less than 0 DEG C) viscosity under low-temperature condition can rise rapidly, mobility sharply declines, therefore this kind of single polyol composition is not suitable for recycling under low-temperature condition, only be suitable for high temperature circulation system, (just as automobile antifreeze solution, recycle when comparatively high temps, keep when low temperature stationary state not freezing), apply under being unsuitable for cold cycle state.Have document to mention a kind of low viscosity functional fluids comprising methoxypolyethylene glycol in recent years, glycol alkyl ether compounds, only for motor vehicle brake fluid aspect, is used for secondary refrigerant and yet there are no report by this liquid.
In recent years LM series heat-transfer medium (trade(brand)name glacial epoch refrigerant) Chinese market promoted, rustless property is excellent, and ability of cold carrier is very strong, can use at-100 DEG C, but this series products also exists certain volatility, use also lack safety assurance in food, pharmaceutical industries.
Summary of the invention
The present invention seeks to overcome defect existing in above-mentioned prior art, a kind of nontoxic, non-volatile, nonflammable, not corroding metal is provided, there is extraordinary mobility at low temperatures simultaneously, the two-way wide temperature secondary refrigerant of the low viscosity very low temperature that thermal conduction is excellent, this secondary refrigerant uses-75 ~ 245 DEG C of temperature ranges.
The technical solution that the present invention proposes is: the two-way wide temperature secondary refrigerant of a kind of low viscosity very low temperature, the composition be made up of glycol alkyl ether compounds, inhibiter, Scale inhibitors and sense regulator solution, is characterized in that: component contained by said composition and weight percent as follows:
The preferred weight percent of secondary refrigerant composition of the present invention is as follows:
Glycol alkyl ether compounds of the present invention be selected from diethylene glycol dimethyl ether, diethylene glycol ethylmethyl ether, dibutyl ethylene glycol ether, dipropylene glycol methyl ether, dimethyl ether, dipropylene glycol methyl propyl ether, in them any one or more than one used in combination.According to the use temperature scope of cryogen of refusing to take a passenger, glycol alkyl ether compounds adjustment concentration 80 ~ 99% interval assembly.
Described inhibiter be selected from phosphoric acid salt, phytate, silicate, nitrate, lactic acid salt, nitrite, borate, molybdate, benzoate and benzotriazole in them any one or more than one used in combination, often kind of inhibiter consumption is no more than 5% of secondary refrigerant gross weight.
These salt are sodium salt or sylvite and not calcic or magnesium salts (because calcium, magnesium salts very easily produce precipitation, fouling), so be that one or more in them are used in combination.
The Scale inhibitors that choosing of the present invention adds is poly-epoxy succinic acid, poly aspartic acid, S-propyloic sulfosuccinic acid in them any one or more than one used in combination.The Scale inhibitors added selected by secondary refrigerant of the present invention is novel equal cluster Scale inhibitors, as poly-epoxy succinic acid, poly aspartic acid, S-propyloic sulfosuccinic acid, its add that total amount is no more than secondary refrigerant gross weight 1%, usually suitable in the scope of 0.1 ~ 0.5%.Scale inhibition, corrosion protection, the effect such as antibacterial can be reached the adding of these corrosion inhibiting and descaling agents.
Described sense regulator solution select water, methyl alcohol, ethanol, propyl alcohol, Virahol, ethylene glycol in them any one or more than one used in combination.This functional liquid can dissolve corrosion inhibiting and descaling agent, and suitable add-on can reduce the viscosity of secondary refrigerant.
The pH value of secondary refrigerant of the present invention should control in the scope of 8 ~ 10, if pH value is lower than 7, then uses the industrial soda such as NaOH or KOH to wither whole because when pH value lower than 7 time, by ineffective, can corrosion phenomenon be there is in some inhibiter.
The present invention has the following advantages compared with prior art products: nontoxic, the non-volatile Loss reducing of product of the present invention, nonflammable, explosive, does not corrode hardware, can work-ing life of extension device; Simultaneously this product has extraordinary mobility at low temperatures, and be the excellent and heat-transfer medium of safety of thermal conduction, product does not produce precipitation, fouling, has refrigerating, heat transfer, inhibition, antibacterial characteristic; This secondary refrigerant does the cold-carrying heat-transfer medium of industrial circle under being applicable to-75 ~ 240 DEG C of temperature, is specially adapted to the indirect heat transfer system of Chemical Manufacture and medical building-up process.
Embodiment
Specific embodiment of the invention scheme is set forth further below in conjunction with embodiment.
Embodiment 1
The weight of secondary refrigerant consists of: diethylene glycol dimethyl ether 95%, Sodium Benzoate 0.05%, Sodium orthomolybdate 0.1%, SODIUMNITRATE 2%, benzotriazole 0.1%, water 2.75%.The freezing point of this secondary refrigerant is less than-80 DEG C, boiling point more than 190 DEG C, and it can do secondary refrigerant under the environment of-40 ~ 185 DEG C, nontoxic, non-volatile, nonflammable, non-scaling, does not go mouldy, and not corroding metal, low-temperature fluidity is good, and circulation conveying is convenient.
Embodiment 2
The weight of secondary refrigerant consists of: dipropylene glycol methyl ether 88%, Sodium Nitrite 2%, poly aspartic acid 0.6%, ethanol 5%, water 4.4%.The freezing point of this secondary refrigerant is less than-80 DEG C, boiling point more than 185 DEG C, and viscosity 72.7cP when-70 DEG C can use under the envrionment temperature of-60 ~ 150 DEG C.Nontoxic, non-volatile, nonflammable, non-scaling, do not go mouldy, not corroding metal, low-temperature fluidity is good, can be widely used in the fields such as food, chemical industry, pharmacy.
Embodiment 3:
The weight of secondary refrigerant consists of: diethylene glycol ethylmethyl ether 95%, Sodium orthomolybdate 1%, SODIUMNITRATE 1.5%, benzotriazole 0.1%, S-propyloic sulfosuccinic acid 0.4%, water 2%.The freezing point of this secondary refrigerant is less than-80 DEG C, boiling point more than 176 DEG C, and viscosity 68.88cP when-75 DEG C can use under the envrionment temperature of-75 ~ 170 DEG C.Nontoxic, non-volatile, nonflammable, non-scaling, do not go mouldy, not corroding metal, low-temperature fluidity is good.
Embodiment 4:
The weight of secondary refrigerant consists of: dipropylene glycol methyl propyl ether 98%, sodium phosphate 0.5%, sodium tetraborate 0.1%, SODIUMNITRATE 0.3%, benzotriazole 0.1%, water 1%.The freezing point of this secondary refrigerant is less than-75 DEG C, boiling point more than 200 DEG C, can use under the envrionment temperature of-70 ~ 190 DEG C.
Embodiment 5:
The weight of secondary refrigerant consists of: dimethyl ether 97%, sodium phytate 0.8%, benzotriazole 0.1%, Sodium Nitrite 1%, water 1.1%.The freezing point of this secondary refrigerant is more than-80 DEG C, boiling point more than 175 DEG C, and-75 DEG C of viscosity are 37.98cP, can use under-75 ~ 175 DEG C of envrionment temperatures.
Embodiment 6:
The weight of secondary refrigerant consists of: dibutyl ethylene glycol ether 91%, sodium phosphate 1%, SODIUMNITRATE 2%, Sodium orthomolybdate 0.5%, benzotriazole 0.2%, water 5.3%.The freezing point of this secondary refrigerant is more than-55 DEG C, boiling point more than 253 DEG C, can use under-50 ~ 245 DEG C of envrionment temperatures.Be applied to beer, food, pharmacy and chemical enterprise and do secondary refrigerant, safe and reliable.
Embodiment 7:
The weight of secondary refrigerant consists of: diethylene glycol dimethyl ether 50%, dipropylene glycol methyl ethyl ether 42%, sodium phytate 1.5%, poly-epoxy succinic acid 0.2%, sodium hydroxide 0.2%, benzotriazole 0.1%, water 6%.The freezing point of this secondary refrigerant-70 DEG C, can use at the temperature of-65 ~ 150 DEG C.Be applied to beer, food, pharmacy, organosilicon and petrochemical enterprise and do secondary refrigerant.
Embodiment 8:
The weight of secondary refrigerant consists of: dipropylene glycol methyl ether 49%, dimethyl ether 45%, Sodium orthomolybdate 1%, Sodium.alpha.-hydroxypropionate 2%, benzotriazole 0.2%, water 2.8%.The freezing point of this secondary refrigerant more than-65 DEG C, uses under can being used in the temperature of-60 ~ 165 DEG C.May be used for food, pharmacy corporation does secondary refrigerant.
Embodiment 9:
The weight of secondary refrigerant consists of: diethylene glycol ethylmethyl ether 54%, dibutyl ethylene glycol ether 40%, Starso 0.5%, Sodium Benzoate 0.5%, SODIUMNITRATE 2%, benzotriazole 0.2%, water 2.8%.The freezing point of this secondary refrigerant more than-55 DEG C, uses under can being used in the temperature of-50 ~ 220 DEG C.
Embodiment 10:
The weight of secondary refrigerant consists of: dipropylene glycol methyl ether 56%, dibutyl ethylene glycol ether 38%, Starso 0.2%, Sodium Nitrite 0.5%, Sodium Benzoate 1.5%, benzotriazole 0.2%, S-propyloic sulfosuccinic acid 0.5%, water 3.1%.The freezing point of this secondary refrigerant more than-65 DEG C, uses under can being used in the temperature of-60 ~ 230 DEG C.Nontoxic, non-volatile, nonflammable, non-scaling, do not go mouldy, not corroding metal, low-temperature fluidity is good.
Claims (7)
1. the two-way wide temperature secondary refrigerant of low viscosity very low temperature, the composition be made up of glycol alkyl ether compounds, inhibiter, Scale inhibitors and sense regulator solution, is characterized in that: component contained by said composition and weight percent as follows:
2., according to the two-way wide temperature secondary refrigerant of low viscosity very low temperature according to claim 1, it is characterized in that: said composition preferred weight percent is as follows:
3., according to the two-way wide temperature secondary refrigerant of very low temperature according to claim 1, it is characterized in that: described glycol alkyl ether compounds be selected from diethylene glycol dimethyl ether, diethylene glycol ethylmethyl ether, dipropylene glycol methyl ether, dibutyl ethylene glycol ether, dimethyl ether, dipropylene glycol methyl propyl ether, in them any one or more than one used in combination.
4. according to the two-way wide temperature secondary refrigerant of very low temperature according to claim 1, it is characterized in that: described inhibiter be selected from phosphoric acid salt, phytate, silicate, nitrate, lactic acid salt, nitrite, borate, molybdate, benzoate and benzotriazole in them any one or more than one used in combination, often kind of inhibiter consumption is no more than 5% of secondary refrigerant gross weight.
5. according to the two-way wide temperature secondary refrigerant of very low temperature according to claim 1, it is characterized in that: the Scale inhibitors that described choosing adds is poly-epoxy succinic acid, poly aspartic acid, S-propyloic sulfosuccinic acid in them any one or more than one used in combination, its add that total amount is no more than secondary refrigerant gross weight 1%.
6., according to the two-way wide temperature secondary refrigerant of very low temperature according to claim 1, it is characterized in that: described sense regulator solution select water, methyl alcohol, ethanol, propyl alcohol, Virahol, ethylene glycol in them any one or more than one used in combination.
7., according to the two-way wide temperature secondary refrigerant of very low temperature according to claim 1, it is characterized in that: with potassium hydroxide or sodium hydroxide adjustment secondary refrigerant pH value be 8 ~ 10.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105154027A (en) * | 2015-07-15 | 2015-12-16 | 朝阳光达化工有限公司 | Industrial secondary refrigerant |
| CN105969320A (en) * | 2016-07-01 | 2016-09-28 | 南京久鼎制冷空调设备有限公司 | Low-temperature secondary refrigerant containing organic acid salts and application of low-temperature secondary refrigerant |
| CN106753269A (en) * | 2016-12-08 | 2017-05-31 | 深圳市瑞思冷链有限公司 | A kind of low temperature refrigerating medium and preparation method thereof |
| CN107512784A (en) * | 2017-09-20 | 2017-12-26 | 朝阳光达化工有限公司 | A kind of corrosion inhibiting and descaling agent for organic alcohols refrigerating system and preparation method thereof |
| CN110669480A (en) * | 2019-10-22 | 2020-01-10 | 辛健 | Efficient composite secondary refrigerant and preparation method and application thereof |
| CN110699047A (en) * | 2018-07-09 | 2020-01-17 | 中国石油化工股份有限公司 | Propylene glycol type cold carrier liquid |
| CN111849429A (en) * | 2020-08-06 | 2020-10-30 | 深圳市百顺源节能科技有限公司 | Long-acting anhydrous anti-freezing solution for automobile engine |
| CN112745808A (en) * | 2021-01-19 | 2021-05-04 | 广东石油化工学院 | Heat management system liquid and preparation method thereof |
| CN113544447A (en) * | 2019-02-08 | 2021-10-22 | 株式会社电装 | Heat transport medium and heat transport system |
| CN115074091A (en) * | 2022-07-08 | 2022-09-20 | 陶普斯化学科技(北京)有限公司 | Long-acting anti-acidification high-efficiency secondary refrigerant and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154027A (en) * | 2015-07-15 | 2015-12-16 | 朝阳光达化工有限公司 | Industrial secondary refrigerant |
| CN105154027B (en) * | 2015-07-15 | 2018-07-20 | 朝阳光达化工有限公司 | A kind of industrial cold-carrying agent |
| CN105969320A (en) * | 2016-07-01 | 2016-09-28 | 南京久鼎制冷空调设备有限公司 | Low-temperature secondary refrigerant containing organic acid salts and application of low-temperature secondary refrigerant |
| CN106753269A (en) * | 2016-12-08 | 2017-05-31 | 深圳市瑞思冷链有限公司 | A kind of low temperature refrigerating medium and preparation method thereof |
| CN107512784A (en) * | 2017-09-20 | 2017-12-26 | 朝阳光达化工有限公司 | A kind of corrosion inhibiting and descaling agent for organic alcohols refrigerating system and preparation method thereof |
| CN110699047A (en) * | 2018-07-09 | 2020-01-17 | 中国石油化工股份有限公司 | Propylene glycol type cold carrier liquid |
| CN113544447A (en) * | 2019-02-08 | 2021-10-22 | 株式会社电装 | Heat transport medium and heat transport system |
| CN110669480A (en) * | 2019-10-22 | 2020-01-10 | 辛健 | Efficient composite secondary refrigerant and preparation method and application thereof |
| CN111849429A (en) * | 2020-08-06 | 2020-10-30 | 深圳市百顺源节能科技有限公司 | Long-acting anhydrous anti-freezing solution for automobile engine |
| CN111849429B (en) * | 2020-08-06 | 2021-05-07 | 深圳市百顺源节能科技有限公司 | Long-acting anhydrous anti-freezing solution for automobile engine |
| CN112745808A (en) * | 2021-01-19 | 2021-05-04 | 广东石油化工学院 | Heat management system liquid and preparation method thereof |
| CN115074091A (en) * | 2022-07-08 | 2022-09-20 | 陶普斯化学科技(北京)有限公司 | Long-acting anti-acidification high-efficiency secondary refrigerant and preparation method thereof |
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